Tagged Questions

Use this tag for questions relating to authentication mechanism (i.e. proving to the system that you are you, using passwords, keycards etc.). In general don't use this and the security tag on the same question, unless it is about the security of the authentication process.

Linux Mint 16 (Ubuntu-based) 32-bit running on a netbook. Installed Wine and Skype, and all updates. Went to install rdesktop (typed rdesktop in the gnome menu search, chose 'install rdesktop'), and I ...

I'm a complete noob in Linux and I'm stuck in a situation where I'm logged in an Linux box from putty but on of my colleague, who was trying to login on same machine from his machine blocked my user ...

Background
I am trying to develop a method to ban users who exhibit strange behavior when logging into Dovecot by obtaining their POP-ID/login name and IP address. I want to send that information to a ...

Background
I have been doing some research on the Dovecot mail server documentation on ways to get client information when a client connects to the server. I am interested in using these to program an ...

I followed this link to install ftp server.
And also added ftp user(ftpuser) and also added ftp password(1234567).
But when I am using this password in any wordpress site or any ftp software such as ...

I'm attempting to move as close to single credential as possible. We have a web application that has a fairly limited set of available authentication mechanisms but will (luckily) allow admins to tell ...

Is there a way to print to a Samba printer requiring authentication by providing the credentials on the command line (e.g., with lpr)?
I managed to store the credentials in GNOME Keyring and when I ...

I've faced times when I accidentally ran dangerous commands and lost all my data. How do I set Linux to ask for current user password or root user password when running potentially dangerous commands ...

I am trying to set up a new computer with Fedora 17 and KDE both working ok. I have plugged in an HP laser USB printer, and am trying to set it up. I enter "system settings -> printers" from the KDE ...

I just got my new Lenovo T440s and installed Fedora 20 with Gnome 3 on it. Everything runs smoothly, except for the fingerprint reader. Its got a Validity VFS5011 (138a:0017) device which is not yet ...

I configured my ftp user's home dir to /var/www and set a password but I cannot login with ftp 127.0.0.1, it keep giving me 530 Login incorrect. Why is this? I'm sure I have typed the password right.
...

I'm trying to access the Linux share folder from Windows using Windows's domain authentication. I come across the integration of Windows Active Directory into Samba on a Linux box, thus I have this ...

I am using a RHEL6 host that is set up using LDAP for authenication. Upon first login it is supposed to create the home directory for the user (e.g. /home/gisle where gisle is my login username). I ...

I've setup my SSH server to use public key authentication. When I connect to my server on local network, it authenticates. But it doesn't when I connect over the internet.
I don't think the problem ...

Consider the following scenario:
I have a Debian-ssh-server setup and exposed it to the internet for some time for testing. Also I have an account which is basically configured as root in the sudoers ...

Here is what I try to accomplish:
I have a server with a git repository.
I use ISPConfig as control panel for our websites and I want to integrate the ISPConfig API for email authentication as second ...

I'm running a process on a Unix box (I think it's a recent version of Red Hat, I can check for more detailed info if relevant), under a local user.
I would like to access some network resources, via ...

I got a VPS with a user dedicated to store my files.
As i am aware of the current situation with the NSA and many other governments, and my VPS is hosted on a doubtful country i would like to ensure ...

Platform: RHEL 5.10
Version: Samba 3.6.6-0.136
Only on a single VM, one of my co-workers is able to log into the VM using his AD credentials without issue, whereas my account appears to have trouble ...

I recently upgraded a minimal installation of Ubuntu (with no full-fledged DE) from precise to saucy and since doing so I'm no longer able to mount removable drives as a normal user. I googled a bit ...

I think I understand the difference between Public Key authentication and Password. But how do I decide which one to use and which one is most secure in what situation? Can anybody give me some real ...

I have a centralized NIS and NFS server on my server. I use this server to control 100 Linux clients, /$home/ directory and authentication are served by the centralized server. The other day in one of ...

I've created a user on CentOS with useradd -M username. Now, I want to become that user just like su - username.
It asks me for a password for that user but I didn't set a password for that user. As ...